"I came into the audition with Kenneth Branagh and thought I nailed it and then never heard anything back," Chris revealed.

They ended up calling Liam instead.

"Months went by and then my brother, my little brother, Liam, was in Australia and sent a tape across and he got a call back, then another call back and then it was down to the last kind of four or five people for it... None of those guys got it."

So Chris decided to try one last time.

"My manager then called up and said, 'You know, [Liam]'s got an older brother. Can we bring him back in?"

He admits that he was more determined the second time round auditioning.

"I came in kind of with a little, I guess, motivation and maybe frustration that my little brother had gotten further than me. It's a little family, sibling rivalry sort of kicked up in me. Then it moved pretty quick from there. It was cool."